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-rw-r--r--app/widgets/gimpaccellabel.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/app/widgets/gimpaccellabel.c b/app/widgets/gimpaccellabel.c
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+++ b/app/widgets/gimpaccellabel.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpaccellabel.c
+ * Copyright (C) 2020 Ell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+
+#include "widgets-types.h"
+
+#include "gimpaction.h"
+#include "gimpaccellabel.h"
+
+
+enum
+{
+ PROP_0,
+ PROP_ACTION
+};
+
+
+struct _GimpAccelLabelPrivate
+{
+ GimpAction *action;
+};
+
+
+/* local function prototypes */
+
+static void gimp_accel_label_dispose (GObject *object);
+static void gimp_accel_label_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_accel_label_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void gimp_accel_label_accel_changed (GtkAccelGroup *accel_group,
+ guint keyval,
+ GdkModifierType modifier,
+ GClosure *accel_closure,
+ GimpAccelLabel *accel_label);
+
+static void gimp_accel_label_update (GimpAccelLabel *accel_label);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpAccelLabel, gimp_accel_label, GTK_TYPE_LABEL)
+
+#define parent_class gimp_accel_label_parent_class
+
+
+/* private functions */
+
+static void
+gimp_accel_label_class_init (GimpAccelLabelClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->dispose = gimp_accel_label_dispose;
+ object_class->get_property = gimp_accel_label_get_property;
+ object_class->set_property = gimp_accel_label_set_property;
+
+ g_object_class_install_property (object_class, PROP_ACTION,
+ g_param_spec_object ("action",
+ NULL, NULL,
+ GIMP_TYPE_ACTION,
+ GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_accel_label_init (GimpAccelLabel *accel_label)
+{
+ accel_label->priv = gimp_accel_label_get_instance_private (accel_label);
+}
+
+static void
+gimp_accel_label_dispose (GObject *object)
+{
+ GimpAccelLabel *accel_label = GIMP_ACCEL_LABEL (object);
+
+ gimp_accel_label_set_action (accel_label, NULL);
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gimp_accel_label_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpAccelLabel *accel_label = GIMP_ACCEL_LABEL (object);
+
+ switch (property_id)
+ {
+ case PROP_ACTION:
+ gimp_accel_label_set_action (accel_label, g_value_get_object (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_accel_label_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpAccelLabel *accel_label = GIMP_ACCEL_LABEL (object);
+
+ switch (property_id)
+ {
+ case PROP_ACTION:
+ g_value_set_object (value, accel_label->priv->action);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_accel_label_accel_changed (GtkAccelGroup *accel_group,
+ guint keyval,
+ GdkModifierType modifier,
+ GClosure *accel_closure,
+ GimpAccelLabel *accel_label)
+{
+ if (accel_closure ==
+ gimp_action_get_accel_closure (accel_label->priv->action))
+ {
+ gimp_accel_label_update (accel_label);
+ }
+}
+
+static gboolean
+gimp_accel_label_update_accel_find_func (GtkAccelKey *key,
+ GClosure *closure,
+ gpointer data)
+{
+ return (GClosure *) data == closure;
+}
+
+static void
+gimp_accel_label_update (GimpAccelLabel *accel_label)
+{
+ GClosure *accel_closure;
+ GtkAccelGroup *accel_group;
+ GtkAccelKey *accel_key;
+
+ gtk_label_set_label (GTK_LABEL (accel_label), NULL);
+
+ if (! accel_label->priv->action)
+ return;
+
+ accel_closure = gimp_action_get_accel_closure (accel_label->priv->action);
+
+ if (! accel_closure)
+ return;
+
+ accel_group = gtk_accel_group_from_accel_closure (accel_closure);
+
+ if (! accel_group)
+ return;
+
+ accel_key = gtk_accel_group_find (accel_group,
+ gimp_accel_label_update_accel_find_func,
+ accel_closure);
+
+ if (accel_key &&
+ accel_key->accel_key &&
+ (accel_key->accel_flags & GTK_ACCEL_VISIBLE))
+ {
+ gchar *label;
+
+ label = gtk_accelerator_get_label (accel_key->accel_key,
+ accel_key->accel_mods);
+
+ gtk_label_set_label (GTK_LABEL (accel_label), label);
+
+ g_free (label);
+ }
+}
+
+
+/* public functions */
+
+GtkWidget *
+gimp_accel_label_new (GimpAction *action)
+{
+ g_return_val_if_fail (action == NULL || GIMP_IS_ACTION (action), NULL);
+
+ return g_object_new (GIMP_TYPE_ACCEL_LABEL,
+ "action", action,
+ NULL);
+}
+
+void
+gimp_accel_label_set_action (GimpAccelLabel *accel_label,
+ GimpAction *action)
+{
+ g_return_if_fail (GIMP_IS_ACCEL_LABEL (accel_label));
+ g_return_if_fail (action == NULL || GIMP_IS_ACTION (action));
+
+ if (action != accel_label->priv->action)
+ {
+ if (accel_label->priv->action)
+ {
+ GClosure *accel_closure;
+
+ accel_closure = gimp_action_get_accel_closure (
+ accel_label->priv->action);
+
+ if (accel_closure)
+ {
+ GtkAccelGroup *accel_group;
+
+ accel_group = gtk_accel_group_from_accel_closure (accel_closure);
+
+ g_signal_handlers_disconnect_by_func (
+ accel_group,
+ gimp_accel_label_accel_changed,
+ accel_label);
+ }
+ }
+
+ g_set_object (&accel_label->priv->action, action);
+
+ if (accel_label->priv->action)
+ {
+ GClosure *accel_closure;
+
+ accel_closure = gimp_action_get_accel_closure (
+ accel_label->priv->action);
+
+ if (accel_closure)
+ {
+ GtkAccelGroup *accel_group;
+
+ accel_group = gtk_accel_group_from_accel_closure (accel_closure);
+
+ g_signal_connect (accel_group, "accel-changed",
+ G_CALLBACK (gimp_accel_label_accel_changed),
+ accel_label);
+ }
+ }
+
+ gimp_accel_label_update (accel_label);
+
+ g_object_notify (G_OBJECT (accel_label), "action");
+ }
+}
+
+GimpAction *
+gimp_accel_label_get_action (GimpAccelLabel *accel_label)
+{
+ g_return_val_if_fail (GIMP_IS_ACCEL_LABEL (accel_label), NULL);
+
+ return accel_label->priv->action;
+}
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